000009887 001__ 9887
000009887 005__ 20141205153203.0
000009887 04107 $$aeng
000009887 046__ $$k2008-10-12
000009887 100__ $$aDobashi, Hiroshi
000009887 24500 $$aFull 3D Seismic Response Analysis of Underground Ramp Tunnel Structure Using Large-Scale Numerical Computation

000009887 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009887 260__ $$b
000009887 506__ $$arestricted
000009887 520__ $$2eng$$aIn the Tokyo metropolitan area, long tunnels are being constructed to make a ring road network. These long tunnels need a ramp tunnel which connects the main tunnel located deep underground to ground level. However, ramp tunnels have a complicated structure and their seismic behavior cannot accurately be evaluated by 2D analysis, therefore a precise examination by 3D analysis is required. In the present study we make a detailed model of the soil-structure system of the ramp tunnel and conduct large-scale numerical computation for the 3D seismic response analysis using a dynamic elastic FEM. The major findings are as follows: i) deformation of the ramp tunnel is not accurately estimated by the standard 2D analysis; ii) the seismic response of the main tunnel is small in a hard soil layer and can be evaluated by the standard 2D analysis; and iii) the 3D seismic response of the ramp tunnel significantly changes depending on the characteristics of the input earthquake ground motion.

000009887 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009887 653__ $$aunderground structure, large-scale computation, FEM, seismic response analysis

000009887 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009887 720__ $$aDobashi, Hiroshi$$iHatsuku, Takehiko$$iIchimura, Tsuyoshi$$iHori, Muneo$$iYamada, Takemine$$iOhbo, Naoto$$iMoriguchi, Masami$$iItami, Hirohito
000009887 8560_ $$ffischerc@itam.cas.cz
000009887 8564_ $$s1624430$$uhttps://invenio.itam.cas.cz/record/9887/files/14-0150.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 14-0150.
000009887 962__ $$r9324
000009887 980__ $$aPAPER